/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Returns a control's preferred euler angles (local transform rotation)
Returns the current preferred euler angles
FVector GetControlPreferredEulerAngles ( const [FRigControlElement](API\Plugins\ControlRig\Rigs\FRigControlElement) * InControlElement, EEulerRotationOrder InRotationOrder, bool bInitial ) const